Programming a Multiplayer FPS in DirectX/Programming a Multiplayer FPS in DirectX (Companion CD).iso/DirectX/dxsdk_oct2004.exe/dxsdk.exe/Samples/C++/Direct3D/HLSLWithoutEffects/HLSLwithoutEffects.cpp

C/C++ Source or Header | 2004-09-27 | 26.2 KB | 587 lines

//--------------------------------------------------------------------------------------
// File: HLSLwithoutEffects.cpp
//
// Desc: Sample showing a simple vertex shader in D3DX High Level Shader
//       Language (HLSL) without using an ID3DXEffect interface.  Not using the
//       ID3DXEffect interface is a more difficult method of using HLSL.  See
//       the BasicHLSL sample for a simpler method of using HLSL.
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//--------------------------------------------------------------------------------------
#include "dxstdafx.h"
#include "resource.h"

//#define DEBUG_VS   // Uncomment this line to debug vertex shaders
//#define DEBUG_PS   // Uncomment this line to debug pixel shaders


//--------------------------------------------------------------------------------------
// Defines
//--------------------------------------------------------------------------------------
#define VERTS_PER_EDGE 64


//--------------------------------------------------------------------------------------
// Global variables
//--------------------------------------------------------------------------------------
ID3DXFont*              g_pFont = NULL;         // Font for drawing text
ID3DXSprite*            g_pTextSprite = NULL;   // Sprite for batching draw text calls
CModelViewerCamera      g_Camera;               // A model viewing camera
bool                    g_bShowHelp = true;     // If true, it renders the UI control text
CDXUTDialog             g_HUD;                  // dialog for standard controls

// Scene
LPDIRECT3DVERTEXBUFFER9      g_pVB = NULL;
LPDIRECT3DINDEXBUFFER9       g_pIB = NULL;
DWORD                        g_dwNumVertices = VERTS_PER_EDGE * VERTS_PER_EDGE;
DWORD                        g_dwNumIndices = 6 * (VERTS_PER_EDGE - 1) * (VERTS_PER_EDGE - 1);
LPDIRECT3DVERTEXSHADER9      g_pVertexShader = NULL;
LPD3DXCONSTANTTABLE          g_pConstantTable = NULL;
LPDIRECT3DVERTEXDECLARATION9 g_pVertexDeclaration = NULL;


//--------------------------------------------------------------------------------------
// UI control IDs
//--------------------------------------------------------------------------------------
#define IDC_TOGGLEFULLSCREEN    1
#define IDC_TOGGLEREF           3
#define IDC_CHANGEDEVICE        4



//--------------------------------------------------------------------------------------
// Forward declarations
//--------------------------------------------------------------------------------------
bool    CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat, D3DFORMAT BackBufferFormat, bool bWindowed );
void    CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings, const D3DCAPS9* pCaps );
HRESULT CALLBACK OnCreateDevice( IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc );
HRESULT CALLBACK OnResetDevice( IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc );
void    CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime );
void    CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime );
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, bool* pbNoFurtherProcessing );
void    CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown  );
void    CALLBACK OnGUIEvent( UINT nEvent, int nControlID, CDXUTControl* pControl );
void    CALLBACK OnLostDevice();
void    CALLBACK OnDestroyDevice();

void    InitApp();
HRESULT LoadMesh( IDirect3DDevice9* pd3dDevice, WCHAR* strFileName, ID3DXMesh** ppMesh );
void    RenderText();


//--------------------------------------------------------------------------------------
// Entry point to the program. Initializes everything and goes into a message processing
// loop. Idle time is used to render the scene.
//--------------------------------------------------------------------------------------
INT WINAPI WinMain( HINSTANCE, HINSTANCE, LPSTR, int )
{
    // Set the callback functions. These functions allow the sample framework to notify
    // the application about device changes, user input, and windows messages.  The
    // callbacks are optional so you need only set callbacks for events you're interested
    // in. However, if you don't handle the device reset/lost callbacks then the sample
    // framework won't be able to reset your device since the application must first
    // release all device resources before resetting.  Likewise, if you don't handle the
    // device created/destroyed callbacks then the sample framework won't be able to
    // recreate your device resources.
    DXUTSetCallbackDeviceCreated( OnCreateDevice );
    DXUTSetCallbackDeviceReset( OnResetDevice );
    DXUTSetCallbackDeviceLost( OnLostDevice );
    DXUTSetCallbackDeviceDestroyed( OnDestroyDevice );
    DXUTSetCallbackMsgProc( MsgProc );
    DXUTSetCallbackKeyboard( KeyboardProc );
    DXUTSetCallbackFrameRender( OnFrameRender );
    DXUTSetCallbackFrameMove( OnFrameMove );

    // Show the cursor and clip it when in full screen
    DXUTSetCursorSettings( true, true );

    InitApp();

    // Initialize the sample framework and create the desired Win32 window and Direct3D
    // device for the application. Calling each of these functions is optional, but they
    // allow you to set several options which control the behavior of the framework.
    DXUTInit( true, true, true ); // Parse the command line, handle the default hotkeys, and show msgboxes
    DXUTCreateWindow( L"HLSLwithoutEffects" );
    DXUTCreateDevice( D3DADAPTER_DEFAULT, true, 640, 480, IsDeviceAcceptable, ModifyDeviceSettings );

    // Pass control to the sample framework for handling the message pump and
    // dispatching render calls. The sample framework will call your FrameMove
    // and FrameRender callback when there is idle time between handling window messages.
    DXUTMainLoop();

    // Perform any application-level cleanup here. Direct3D device resources are released within the
    // appropriate callback functions and therefore don't require any cleanup code here.

    return DXUTGetExitCode();
}


//--------------------------------------------------------------------------------------
// Initialize the app
//--------------------------------------------------------------------------------------
void InitApp()
{
    // Initialize dialogs
    g_HUD.SetCallback( OnGUIEvent ); int iY = 10;
    g_HUD.AddButton( IDC_TOGGLEFULLSCREEN, L"Toggle full screen", 35, iY, 125, 22 );
    g_HUD.AddButton( IDC_TOGGLEREF, L"Toggle REF (F3)", 35, iY += 24, 125, 22 );
    g_HUD.AddButton( IDC_CHANGEDEVICE, L"Change device (F2)", 35, iY += 24, 125, 22 );
}


//--------------------------------------------------------------------------------------
// Called during device initialization, this code checks the device for some
// minimum set of capabilities, and rejects those that don't pass by returning false.
//--------------------------------------------------------------------------------------
bool CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat,
                                  D3DFORMAT BackBufferFormat, bool bWindowed )
{
    // Skip backbuffer formats that don't support alpha blending
    IDirect3D9* pD3D = DXUTGetD3DObject();
    if( FAILED( pD3D->CheckDeviceFormat( pCaps->AdapterOrdinal, pCaps->DeviceType,
                    AdapterFormat, D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING,
                    D3DRTYPE_TEXTURE, BackBufferFormat ) ) )
        return false;

    return true;
}


//--------------------------------------------------------------------------------------
// This callback function is called immediately before a device is created to allow the
// application to modify the device settings. The supplied pDeviceSettings parameter
// contains the settings that the framework has selected for the new device, and the
// application can make any desired changes directly to this structure.  Note however that
// the sample framework will not correct invalid device settings so care must be taken
// to return valid device settings, otherwise IDirect3D9::CreateDevice() will fail.
//--------------------------------------------------------------------------------------
void CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings, const D3DCAPS9* pCaps )
{
    // If device doesn't support HW T&L or doesn't support 1.1 vertex shaders in HW
    // then switch to SWVP.
    if( (pCaps->DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT) == 0 ||
         pCaps->VertexShaderVersion < D3DVS_VERSION(1,1) )
    {
        pDeviceSettings->BehaviorFlags = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
    }
    else
    {
        pDeviceSettings->BehaviorFlags = D3DCREATE_HARDWARE_VERTEXPROCESSING;
    }

    // This application is designed to work on a pure device by not using
    // IDirect3D9::Get*() methods, so create a pure device if supported and using HWVP.
    if ((pCaps->DevCaps & D3DDEVCAPS_PUREDEVICE) != 0 &&
        (pDeviceSettings->BehaviorFlags & D3DCREATE_HARDWARE_VERTEXPROCESSING) != 0 )
        pDeviceSettings->BehaviorFlags |= D3DCREATE_PUREDEVICE;

    // Debugging vertex shaders requires either REF or software vertex processing
    // and debugging pixel shaders requires REF.
#ifdef DEBUG_VS
    if( pDeviceSettings->DeviceType != D3DDEVTYPE_REF )
    {
        pDeviceSettings->BehaviorFlags &= ~D3DCREATE_HARDWARE_VERTEXPROCESSING;
        pDeviceSettings->BehaviorFlags |= D3DCREATE_SOFTWARE_VERTEXPROCESSING;
    }
#endif
#ifdef DEBUG_PS
    pDeviceSettings->DeviceType = D3DDEVTYPE_REF;
#endif
}


//--------------------------------------------------------------------------------------
// This callback function will be called immediately after the Direct3D device has been
// created, which will happen during application initialization and windowed/full screen
// toggles. This is the best location to create D3DPOOL_MANAGED resources since these
// resources need to be reloaded whenever the device is destroyed. Resources created
// here should be released in the OnDestroyDevice callback.
//--------------------------------------------------------------------------------------
HRESULT CALLBACK OnCreateDevice( IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc )
{
    HRESULT hr;

    // Initialize the font
    V_RETURN( D3DXCreateFont( pd3dDevice, 15, 0, FW_BOLD, 1, FALSE, DEFAULT_CHARSET,
                         OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE,
                         L"Arial", &g_pFont ) );

    // Create vertex shader
    WCHAR        strPath[512];
    LPD3DXBUFFER pCode;

    D3DVERTEXELEMENT9 decl[] =
    {
        { 0, 0, D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0 },
        D3DDECL_END()
    };

    V_RETURN( pd3dDevice->CreateVertexDeclaration( decl, &g_pVertexDeclaration ) );

    // Find the vertex shader file
    V_RETURN( DXUTFindDXSDKMediaFileCch( strPath, 512, L"HLSLwithoutEffects.vsh" ) );


    // Define DEBUG_VS and/or DEBUG_PS to debug vertex and/or pixel shaders with the
    // shader debugger. Debugging vertex shaders requires either REF or software vertex
    // processing, and debugging pixel shaders requires REF.  The
    // D3DXSHADER_FORCE_*_SOFTWARE_NOOPT flag improves the debug experience in the
    // shader debugger.  It enables source level debugging, prevents instruction
    // reordering, prevents dead code elimination, and forces the compiler to compile
    // against the next higher available software target, which ensures that the
    // unoptimized shaders do not exceed the shader model limitations.  Setting these
    // flags will cause slower rendering since the shaders will be unoptimized and
    // forced into software.  See the DirectX documentation for more information about
    // using the shader debugger.
    DWORD dwShaderFlags = 0;
    #ifdef DEBUG_VS
        dwShaderFlags |= D3DXSHADER_FORCE_VS_SOFTWARE_NOOPT;
    #endif
    #ifdef DEBUG_PS
        dwShaderFlags |= D3DXSHADER_FORCE_PS_SOFTWARE_NOOPT;
    #endif

    // Assemble the vertex shader from the file
    V_RETURN( D3DXCompileShaderFromFile( strPath, NULL, NULL, "Ripple",
                                         "vs_1_1", dwShaderFlags, &pCode,
                                         NULL, &g_pConstantTable ) );

    // Create the vertex shader
    hr = pd3dDevice->CreateVertexShader( (DWORD*)pCode->GetBufferPointer(),
                                            &g_pVertexShader );
    pCode->Release();
    if( FAILED(hr) )
        return DXTRACE_ERR( TEXT("CreateVertexShader"), hr );


    // Setup the camera's view parameters
    g_Camera.SetViewQuat( D3DXQUATERNION(-0.275f, 0.3f, 0.0f, 0.7f) );


    return S_OK;
}


//--------------------------------------------------------------------------------------
// This function loads the mesh and ensures the mesh has normals; it also optimizes the
// mesh for the graphics card's vertex cache, which improves performance by organizing
// the internal triangle list for less cache misses.
//--------------------------------------------------------------------------------------
HRESULT LoadMesh( IDirect3DDevice9* pd3dDevice, WCHAR* strFileName, ID3DXMesh** ppMesh )
{
    ID3DXMesh* pMesh = NULL;
    WCHAR str[MAX_PATH];
    HRESULT hr;

    // Load the mesh with D3DX and get back a ID3DXMesh*.  For this
    // sample we'll ignore the X file's embedded materials since we know
    // exactly the model we're loading.  See the mesh samples such as
    // "OptimizedMesh" for a more generic mesh loading example.
    V_RETURN( DXUTFindDXSDKMediaFileCch( str, MAX_PATH, strFileName ) );

    V_RETURN( D3DXLoadMeshFromX(str, D3DXMESH_MANAGED, pd3dDevice, NULL, NULL, NULL, NULL, &pMesh) );

    DWORD *rgdwAdjacency = NULL;

    // Make sure there are normals which are required for lighting
    if( !(pMesh->GetFVF() & D3DFVF_NORMAL) )
    {
        ID3DXMesh* pTempMesh;
        V( pMesh->CloneMeshFVF( pMesh->GetOptions(),
                                  pMesh->GetFVF() | D3DFVF_NORMAL,
                                  pd3dDevice, &pTempMesh ) );
        V( D3DXComputeNormals( pTempMesh, NULL ) );

        SAFE_RELEASE( pMesh );
        pMesh = pTempMesh;
    }

    // Optimize the mesh for this graphics card's vertex cache
    // so when rendering the mesh's triangle list the vertices will
    // cache hit more often so it won't have to re-execute the vertex shader
    // on those vertices so it will improve perf.
    rgdwAdjacency = new DWORD[pMesh->GetNumFaces() * 3];
    if( rgdwAdjacency == NULL )
        return E_OUTOFMEMORY;
    V( pMesh->ConvertPointRepsToAdjacency(NULL, rgdwAdjacency) );
    V( pMesh->OptimizeInplace(D3DXMESHOPT_VERTEXCACHE, rgdwAdjacency, NULL, NULL, NULL) );
    delete []rgdwAdjacency;

    *ppMesh = pMesh;

    return S_OK;
}


//--------------------------------------------------------------------------------------
// This callback function will be called immediately after the Direct3D device has been
// reset, which will happen after a lost device scenario. This is the best location to
// create D3DPOOL_DEFAULT resources since these resources need to be reloaded whenever
// the device is lost. Resources created here should be released in the OnLostDevice
// callback.
//--------------------------------------------------------------------------------------
HRESULT CALLBACK OnResetDevice( IDirect3DDevice9* pd3dDevice,
                                const D3DSURFACE_DESC* pBackBufferSurfaceDesc )
{
    HRESULT hr;

    if( g_pFont )
        V_RETURN( g_pFont->OnResetDevice() );

    // Create a sprite to help batch calls when drawing many lines of text
    V_RETURN( D3DXCreateSprite( pd3dDevice, &g_pTextSprite ) );

    // Setup render states
    pd3dDevice->SetRenderState( D3DRS_LIGHTING, FALSE );
    pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );

    // Create and initialize index buffer
    WORD* pIndices;

    V_RETURN( pd3dDevice->CreateIndexBuffer( g_dwNumIndices * sizeof(WORD),
                                               0, D3DFMT_INDEX16,
                                               D3DPOOL_DEFAULT, &g_pIB, NULL ) );


    V_RETURN( g_pIB->Lock( 0, 0, (void**)&pIndices, 0 ) );


    DWORD y;
    for( y = 1; y < VERTS_PER_EDGE; y++ )
    {
        for( DWORD x = 1; x < VERTS_PER_EDGE; x++ )
        {
            *pIndices++ = (WORD)( (y-1)*VERTS_PER_EDGE + (x-1) );
            *pIndices++ = (WORD)( (y-0)*VERTS_PER_EDGE + (x-1) );
            *pIndices++ = (WORD)( (y-1)*VERTS_PER_EDGE + (x-0) );

            *pIndices++ = (WORD)( (y-1)*VERTS_PER_EDGE + (x-0) );
            *pIndices++ = (WORD)( (y-0)*VERTS_PER_EDGE + (x-1) );
            *pIndices++ = (WORD)( (y-0)*VERTS_PER_EDGE + (x-0) );
        }
    }

    V_RETURN( g_pIB->Unlock() );

    // Create and initialize vertex buffer
    V_RETURN( pd3dDevice->CreateVertexBuffer( g_dwNumVertices * sizeof(D3DXVECTOR2),
                                                0, 0,
                                                 D3DPOOL_DEFAULT, &g_pVB, NULL ) );

    D3DXVECTOR2 *pVertices;
    V_RETURN( g_pVB->Lock( 0, 0, (void**)&pVertices, 0 ) );

    for( y = 0; y < VERTS_PER_EDGE; y++ )
    {
        for( DWORD x = 0; x < VERTS_PER_EDGE; x++ )
        {
            *pVertices++ = D3DXVECTOR2( ((float)x / (float)(VERTS_PER_EDGE-1) - 0.5f) * D3DX_PI,
                                        ((float)y / (float)(VERTS_PER_EDGE-1) - 0.5f) * D3DX_PI );
        }
    }

    V_RETURN( hr = g_pVB->Unlock() );


    // Setup the camera's projection parameters
    float fAspectRatio = pBackBufferSurfaceDesc->Width / (FLOAT)pBackBufferSurfaceDesc->Height;
    g_Camera.SetProjParams( D3DX_PI/4, fAspectRatio, 0.1f, 1000.0f );
    g_Camera.SetWindow( pBackBufferSurfaceDesc->Width, pBackBufferSurfaceDesc->Height );

    g_HUD.SetLocation( pBackBufferSurfaceDesc->Width-170, 0 );
    g_HUD.SetSize( 170, 170 );

    return S_OK;
}


//--------------------------------------------------------------------------------------
// This callback function will be called once at the beginning of every frame. This is the
// best location for your application to handle updates to the scene, but is not
// intended to contain actual rendering calls, which should instead be placed in the
// OnFrameRender callback.
//--------------------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime )
{
    // Update the camera's position based on user input
    g_Camera.FrameMove( fElapsedTime );

    // Set up the vertex shader constants
    D3DXMATRIXA16 mWorldViewProj;
    D3DXMATRIXA16 mWorld;
    D3DXMATRIXA16 mView;
    D3DXMATRIXA16 mProj;

    mWorld = *g_Camera.GetWorldMatrix();
    mView  = *g_Camera.GetViewMatrix();
    mProj  = *g_Camera.GetProjMatrix();

    mWorldViewProj = mWorld * mView * mProj;

    g_pConstantTable->SetMatrix( pd3dDevice, "mWorldViewProj", &mWorldViewProj );
    g_pConstantTable->SetFloat( pd3dDevice, "fTime", (float) fTime );
}


//--------------------------------------------------------------------------------------
// This callback function will be called at the end of every frame to perform all the
// rendering calls for the scene, and it will also be called if the window needs to be
// repainted. After this function has returned, the sample framework will call
// IDirect3DDevice9::Present to display the contents of the next buffer in the swap chain
//--------------------------------------------------------------------------------------
void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime )
{
    HRESULT hr;

    // Clear the render target and the zbuffer
    V( pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(0, 45, 50, 170), 1.0f, 0) );

    // Render the scene
    if( SUCCEEDED( pd3dDevice->BeginScene() ) )
    {
        pd3dDevice->SetVertexDeclaration( g_pVertexDeclaration );
        pd3dDevice->SetVertexShader( g_pVertexShader );
        pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof(D3DXVECTOR2) );
        pd3dDevice->SetIndices( g_pIB );

        V( pd3dDevice->DrawIndexedPrimitive( D3DPT_TRIANGLELIST, 0, 0, g_dwNumVertices,
                                             0, g_dwNumIndices/3 ) );

        RenderText();
        V( g_HUD.OnRender( fElapsedTime ) );

        V( pd3dDevice->EndScene() );
    }
}


//--------------------------------------------------------------------------------------
// Render the help and statistics text. This function uses the ID3DXFont interface for
// efficient text rendering.
//--------------------------------------------------------------------------------------
void RenderText()
{
    // The helper object simply helps keep track of text position, and color
    // and then it calls pFont->DrawText( g_pSprite, strMsg, -1, &rc, DT_NOCLIP, g_clr );
    // If NULL is passed in as the sprite object, then it will work however the
    // pFont->DrawText() will not be batched together.  Batching calls will improves performance.
    CDXUTTextHelper txtHelper( g_pFont, g_pTextSprite, 15 );

    // Output statistics
    txtHelper.Begin();
    txtHelper.SetInsertionPos( 5, 5 );
    txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 0.0f, 1.0f ) );
    txtHelper.DrawTextLine( DXUTGetFrameStats() );
    txtHelper.DrawTextLine( DXUTGetDeviceStats() );

    txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );

    // Draw help
    if( g_bShowHelp )
    {
        const D3DSURFACE_DESC* pd3dsdBackBuffer = DXUTGetBackBufferSurfaceDesc();
        txtHelper.SetInsertionPos( 10, pd3dsdBackBuffer->Height-15*6 );
        txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 0.75f, 0.0f, 1.0f ) );
        txtHelper.DrawTextLine( L"Controls (F1 to hide):" );

        txtHelper.SetInsertionPos( 40, pd3dsdBackBuffer->Height-15*5 );
        txtHelper.DrawTextLine( L"Rotate model: Left mouse button\n"
                                L"Rotate camera: Right mouse button\n"
                                L"Zoom camera: Mouse wheel scroll\n"
                                L"Hide help: F1" );
    }
    else
    {
        txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
        txtHelper.DrawTextLine( L"Press F1 for help" );
    }
    txtHelper.End();
}


//--------------------------------------------------------------------------------------
// Before handling window messages, the sample framework passes incoming windows
// messages to the application through this callback function. If the application sets
// *pbNoFurtherProcessing to TRUE, then the sample framework will not process this message.
//--------------------------------------------------------------------------------------
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, bool* pbNoFurtherProcessing )
{
    // Give the dialogs a chance to handle the message first
    *pbNoFurtherProcessing = g_HUD.MsgProc( hWnd, uMsg, wParam, lParam );
    if( *pbNoFurtherProcessing )
        return 0;

    // Pass all remaining windows messages to camera so it can respond to user input
    g_Camera.HandleMessages( hWnd, uMsg, wParam, lParam );

    return 0;
}


//--------------------------------------------------------------------------------------
// As a convenience, the sample framework inspects the incoming windows messages for
// keystroke messages and decodes the message parameters to pass relevant keyboard
// messages to the application.  The framework does not remove the underlying keystroke
// messages, which are still passed to the application's MsgProc callback.
//--------------------------------------------------------------------------------------
void CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown )
{
    if( bKeyDown )
    {
        switch( nChar )
        {
            case VK_F1: g_bShowHelp = !g_bShowHelp; break;
        }
    }
}


//--------------------------------------------------------------------------------------
// Handles the GUI events
//--------------------------------------------------------------------------------------
void CALLBACK OnGUIEvent( UINT nEvent, int nControlID, CDXUTControl* pControl )
{
    switch( nControlID )
    {
        case IDC_TOGGLEFULLSCREEN: DXUTToggleFullScreen(); break;
        case IDC_TOGGLEREF:        DXUTToggleREF(); break;
        case IDC_CHANGEDEVICE:     DXUTSetShowSettingsDialog( !DXUTGetShowSettingsDialog() ); break;
    }
}


//--------------------------------------------------------------------------------------
// This callback function will be called immediately after the Direct3D device has
// entered a lost state and before IDirect3DDevice9::Reset is called. Resources created
// in the OnResetDevice callback should be released here, which generally includes all
// D3DPOOL_DEFAULT resources. See the "Lost Devices" section of the documentation for
// information about lost devices.
//--------------------------------------------------------------------------------------
void CALLBACK OnLostDevice()
{
    if( g_pFont )
        g_pFont->OnLostDevice();

    SAFE_RELEASE( g_pIB );
    SAFE_RELEASE( g_pVB );
    SAFE_RELEASE( g_pTextSprite );
}


//--------------------------------------------------------------------------------------
// This callback function will be called immediately after the Direct3D device has
// been destroyed, which generally happens as a result of application termination or
// windowed/full screen toggles. Resources created in the OnCreateDevice callback
// should be released here, which generally includes all D3DPOOL_MANAGED resources.
//--------------------------------------------------------------------------------------
void CALLBACK OnDestroyDevice()
{
    SAFE_RELEASE( g_pFont );
    SAFE_RELEASE( g_pVertexShader );
    SAFE_RELEASE( g_pConstantTable );
    SAFE_RELEASE( g_pVertexDeclaration );
}